545980553 has 2 divisors, whose sum is σ = 545980554. Its totient is φ = 545980552.

The previous prime is 545980543. The next prime is 545980571. The reversal of 545980553 is 355089545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391525369 + 154455184 = 19787^2 + 12428^2 .

It is a cyclic number.

It is not a de Polignac number, because 545980553 - 2⁴ = 545980537 is a prime.

It is not a weakly prime, because it can be changed into another prime (545980543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272990276 + 272990277.

It is an arithmetic number, because the mean of its divisors is an integer number (272990277).

Almost surely, 2^545980553 is an apocalyptic number.

It is an amenable number.

545980553 is a deficient number, since it is larger than the sum of its proper divisors (1).

545980553 is an equidigital number, since it uses as much as digits as its factorization.

545980553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540000, while the sum is 44.

The square root of 545980553 is about 23366.2267600056. The cubic root of 545980553 is about 817.3204987656.

The spelling of 545980553 in words is "five hundred forty-five million, nine hundred eighty thousand, five hundred fifty-three".